package com.sky.service.impl;


import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.awt.*;
import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private  ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;


    //添加购物车
    @Override
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {
    //    判断当前加入到购物车中的商品是否已经存在
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        Long usertId = BaseContext.getCurrentId();
        shoppingCart.setUserId(usertId);
        List<ShoppingCart> list  =shoppingCartMapper.list(shoppingCart);

        //    如果已经存在，只需要将数量加一
        if (list !=null && list.size()>0 ){
            ShoppingCart cart = list.get(0);
            cart.setNumber(cart.getNumber()+1);//数量加一
            shoppingCartMapper.updateNumberById(cart);
        }else {
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId != null){
                //本次添加的是菜品
                Dish dish = dishMapper.getById(dishId);
                log.info("当前添加的是菜品：{}",dish);
                shoppingCart.setAmount(dish.getPrice());
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
            }else {
                //添加到购物车，数量默认为1
                Setmeal setmeal = setmealMapper.getById(shoppingCartDTO.getSetmealId());
                shoppingCart.setAmount(setmeal.getPrice());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());


            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }
    //    如果不存在，则添加到购物车，数量默认为1

    }
    //查看购物车
    @Override
    public List<ShoppingCart> showShoppingCart() {
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);

        return list;
    }

    @Override
    public void cleanShoppingCart() {
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        shoppingCartMapper.deleteByUserId(userId);
    }
}
